A student was given five labeled solutions: NiCl2 , Pb(NO3)2 , NaOH , Na2C2O4 , and CuSO4 . After mixing these solutions in pairs, the student recorded her observations on Table 3. She was then given five labeled solutions: A, B, C, D, and E. After mixing these solutions in pairs, the student recorded her observations on Table 4. The one thing that she does know about these solutions is that the unknowns are the same solutions as the knowns. So what are the five unknown solutions, i.e. list out A= , B= , C= , D= , E= . Table 3: KNOWNS XXX CuSO4 Na2C2O4 NaOH Pb(NO3)2 NiCl2 NR, blue green solution NR, green solution green ppt, green solution NR, green solution Pb(NO3)2 white ppt, blue solution white ppt, clear colorless solution white ppt, clear colorless solution XXX NaOH blue ppt, blue solution NR, clear colorless solution XXX XXX Na2C2O4 white ppt, blue solution XXX XXX XXX Table 4: UNKNOWNS XXX E D C B A blue ppt, blue solution white ppt, clear colorless solution NR, clear colorless solution green ppt, green solution B NR, blue green solution NR, green solution NR, green solution XXX C white ppt, blue solution white ppt, clear colorless solution XXX XXX D white ppt, blue solution XXX XXX XXX
A student was given five labeled solutions: NiCl2 , Pb(NO3)2 , NaOH , Na2C2O4 , and CuSO4 . After mixing these solutions in pairs, the student recorded her observations on Table 3. She was then given five labeled solutions: A, B, C, D, and E. After mixing these solutions in pairs, the student recorded her observations on Table 4. The one thing that she does know about these solutions is that the unknowns are the same solutions as the knowns. So what are the five unknown solutions, i.e. list out A= , B= , C= , D= , E= . Table 3: KNOWNS XXX CuSO4 Na2C2O4 NaOH Pb(NO3)2 NiCl2 NR, blue green solution NR, green solution green ppt, green solution NR, green solution Pb(NO3)2 white ppt, blue solution white ppt, clear colorless solution white ppt, clear colorless solution XXX NaOH blue ppt, blue solution NR, clear colorless solution XXX XXX Na2C2O4 white ppt, blue solution XXX XXX XXX Table 4: UNKNOWNS XXX E D C B A blue ppt, blue solution white ppt, clear colorless solution NR, clear colorless solution green ppt, green solution B NR, blue green solution NR, green solution NR, green solution XXX C white ppt, blue solution white ppt, clear colorless solution XXX XXX D white ppt, blue solution XXX XXX XXX
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A student was given five labeled solutions: NiCl2 , Pb(NO3)2 , NaOH , Na2C2O4 , and CuSO4 . After mixing these solutions in pairs, the student recorded her observations on Table 3. She was then given five labeled solutions: A, B, C, D, and E. After mixing these solutions in pairs, the student recorded her observations on Table 4. The one thing that she does know about these solutions is that the unknowns are the same solutions as the knowns. So what are the five unknown solutions, i.e. list out A= , B= , C= , D= , E= .
Table 3: KNOWNS
| XXX | CuSO4 | Na2C2O4 | NaOH | Pb(NO3)2 |
| NiCl2 | NR, blue green solution | NR, green solution | green ppt, green solution | NR, green solution |
| Pb(NO3)2 | white ppt, blue solution | white ppt, clear colorless solution | white ppt, clear colorless solution | XXX |
| NaOH | blue ppt, blue solution | NR, clear colorless solution | XXX | XXX |
| Na2C2O4 | white ppt, blue solution | XXX | XXX | XXX |
Table 4: UNKNOWNS
| XXX | E | D | C | B |
| A | blue ppt, blue solution | white ppt, clear colorless solution | NR, clear colorless solution | green ppt, green solution |
| B | NR, blue green solution | NR, green solution | NR, green solution | XXX |
| C | white ppt, blue solution | white ppt, clear colorless solution | XXX | XXX |
| D | white ppt, blue solution | XXX | XXX | XXX |
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